Henry nicolas grosselin



(No Model.)

H. N. GROSSELIN. .GIG MILL.

No. 536.5156. l Patented Mar. 26, 1895.

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- STATES' 'PATENT si-iron.

-HENRY NICOLAS CrROSSEL-IN,` OE SEDAN, FRANCE, ASSIGNOR To CHARLES HEAROE ROCHDALE, ENGLAND.

GIG-MILL.

SPECIFICATION forming part of Letters Patent No. 536,516, dated March.26, 1895.

pplicaton led January 8,1891. Serial No. 377,190l (No model.) PatentedinFrance May 30,1890, No. 206,004 in Germany June 10,1890, No. 65,078, andin England December 6,1890,N0 .19,929.

To a/ZZ whom it may concern: K

Be it known that I, HENRY NICOLAS GROSSE- LIN, of Sedan, Ardennes,France, have invented certain new and useful Improvements in Gig-Mills,of which the following is a specification.

This invention which was patented in France May 30, 1890, No. 206,004,and in Germany June 10, 1890, No. 65,078, and in the British Patent No.19,929, of December 6, 1890, has reference to gig mills in which aseries of working or teaseling rollers of variable energy are arrangedaround a single drum with teeth pointed some in the reverse direction tothe others so as to producea simultaneous teaseling or dressing of thecloth in both directions, that is to sayin the direction of the nap andlagainst the nap, the said rollers all turning in the same direction butat dierent speeds,these speeds being capable of being varied at willaccording to the degree of working energy which it is desired to obtain.e

In the accompanying drawings-Figure 1, is an end elevation illustratingsufficient of the drum, rollers and' adjacent parts of a napping machineto exemplify my invention. Fig. 2, is a plan in partsection of the partsshown in Fig. 1. Figs. 3 and 4 are an end elevation and plan Viewshowing the drum, rollers and adjacent parts illustrating a dif- ,ferentarrangement of gear. v

The novel construction of the description of gig mills which forms thesubject of the present invention enables me to effect a simultaneousteaseling or dressing in the direction ofthe nap and against the napwith one drum A turning in one direction and carrying aseries of nappingrollers revolving round work the cloth in one way possess in order toregulate the movement or rather the speed clothin the opposite directionby connecting the two sets of rollers by an arrangement of toothedWheels of diierent diameters or by other equivalent mechanical means. 1nthis manner the first set of rollers, a, that with the card teeth turnedforward, that is to say in the direction of the drums rotation,willcommunicate the movement to the second set of rollers, d, that with thecard teeth turned backward, that is to say in the direction opposite.

crease in proportion to the difference between the speeds of the twosets of rollers. The rollers a, acting. with the nap and driven by thecloth will therefore communicate a more or less-accelerated movement tothe rollers d which act against the nap. This is eiected by the teeth ofthe rollers a, engaging the cloth as the drum revolves so that saidrollers a, are thereby turned as they travel on the cloth and beinggeared with the rollers cl, the said rollers a, turn or drive therollers d.

The two sets of rollers a and d being connected together by wheels andpinions it will be understood that it suffices to modify the relationbetween the diameters of the wheels which drive one set of rollers andthe diameters of the Wheels which drive the other set of rollers i'norder to produce differences of speed between the two sets, differenceswhich are translated by a greater resistance to the turning of therollers and consequently by an increase of their working energy. Variousmechanical means may be adopted for attaining the desired result, thesemeans differing only in the arrangement of their parts.-

Supposing, (see Figs. 1 and 2) that each of the rollers ct, acting withthe nap carries at its end a pinion b, of a diameter equal to thediameter of the roller reckoned at the exterior of the card, all thepinions ofthe seven rollers acting with thernapV (supposing the drum tohave fourteen rollers) will gear with an internally toothed wheel c.Each of the seven other rollers d, those acting against the nap carriesat its end at the same side of the drum, a toothed wheel c of a diameterdiffering from the preceding that is to say smaller, and gearing withthe same internally toothed wheel. The result is that as all the rollerswill develop within the toothed wheel an equal circumferential speedthose which have smaller pinions will revolve more quickly than theothers. As the two sets are connected together there will be a slippingor friction on the cloth to be teaseled or dressed which will be equallyexerted in the two sets of rollers and which will be the moreconsiderable as the dierence between the pinions is the greater.Supposingall the rollers a., acting with the nap have pinions IJ, oftwenty-five teeth and all the rollers cl, acting against the nap havepinions e, of twenty teeth, there will be a difference of one-iifthbetween the speeds of the two sets of rollers. As the eifect or slip ofthe cards on the cloth is equally distributed between the two sets, eachof them will have 'a useful effect of one-tenth, that is to say ten percent. of the distance traveled by the circumference of the drum. Thisiirst arrangement is very simple. It allows of constructing at a smallcost a practical gig mill of great useful eect and very suitable formanufacturers who have always cloth of the same nature to teasel ordress, as is often the case in woolen factories.

As it is often necesssary to change the energy of the rollers so as tobe able to utilize the same machine for dressing cloths of differentstrength and resistance it is useful to be able to modify at will therelation between the speeds of the two sets of rollers. Vvvhilepreserving the rst arrangement above described it is su'icient tosubstitute for the pinions a, of twenty-ve teeth of the rollers actingwith the nap other pinions of twentysix or twenty-seven teeth which maybe done without changing the other parts or altering the positions ofthe shafts in order to obtain a corresponding accelerated speed in theset of rollers acting against the nap. If in this same setthe pinions oftwenty teeth are changed for others of nineteen or eighteen teeth thedifference will increase progressively and the Working energy will bemore and more considerable. Experience shows that without changing theinternally toothed wheel the pinions of twenty-[ive teeth of the rollersacting with the nap can without inconvenience be replaced by others oft\venty-six,twen ty-seven oreven twenty-eight teeth. Similarly thepinions ofthe rollers acting against the nap can be replaced by othersof nineteen, eighteen or seventeen teeth. There can thus be obtained sixdifferent degrees of energy, and in practice this amount of variationis, broadly speaking, sufficient to allow of dressing the large majorityof cloths.

In some gig mills working both with and against the nap on the same drumas hitherto constructed the axes of the two sets of rollers are at anunequal distance from the center so as to allow of cleaning or strippingthe cards. The application of the mechanism above described is thereforethe more easy as the rollers acting against the nap which are thefurther from the axis of the drum, have to receive the pinions ofsmaller diameter.

The mechanism which I have above described and which relates to the useof an internally toothed wheelis equally applicable if externallytoothed wheels are employed. In this latter case, see Figs. 3 and 4,some modiiications have to be made in the construction ifit is wished touse a single externally toothed wheel c with which gear all the pinionsof the two sets of rollers. It will be necessary to invert the positionof the two sets, that is to say to place in the bearings which arefarther from the center the rollers a acting with the nap, that is tosay those which have the card points forward, and place the rollers` CZacting against the nap in the bearings which are nearer thecenter of thedrum. At the same time the direction of rotation of the internalstripperf, should be changed.

What I claim, and desire to secure by Letters Patent, is-

1. The combination of a drum, two sets of napping rolls carried therebyprovided with gears of different diameters, and a gear engaging those ofall the rolls, substantially as described.

2. The combination of a drum,twoseries of napping rollers carriedthereby, one series with teeth arranged to act with the nap and theothers with teeth to act against the nap, and gearing between the twoseries of rollers, the said gearing being proportioned and arranged,substantially as described, to rotate one series of rolls at a differentspeed from the other, for the purpose set forth.

3. In a gig mill a drum carrying two sets of rollers a, b, with reversedteeth, those of the rollers a, turning in the direction of the drumsrotation and each roller shaft provided with a pinion, the pinions of'the rollers a, being larger in diameter than those `of the rollers d,and intermediate gears or connections between the two series of pinionswhereby the movements of the rollers a, are transmitted at a differentspeed to the rollers d, substantially as set forth.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

HENRY NICOLAS GROSSELIN.

Witnesses:

RoBT. M. HooPER, ALPHONSE GRNFELDER.

IIQ

